Pressure Warning Cap Car Tire Pressure Valve Cap Nozzle Tire Pressure Cover Monitoring Cap Car Tire Detection Cap 4 Pack

Products with plastic core and copper core are purchased according to your own needs! I recommend that you buy a copper core one that works better!

1. Unscrew the existing bonnet2. Adjust the tire pressure to the range suggested by the manufacturer. (It is recommended to adjust to the green position)3. Screw the indicator cap to the tire valve by hand4. Check the indicator cap regularly5. If the Green drop shows red, it indicates that the tire pressure is insufficient.6. Inflate the tire to the correct pressure7. Keep the valve cover clean and easy to check.